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Featured researches published by Trevor A. Hart.


American Journal of Public Health | 2003

Association of Co-Occurring Psychosocial Health Problems and Increased Vulnerability to HIV/AIDS Among Urban Men Who Have Sex With Men

Ron Stall; Thomas C. Mills; John Williamson; Trevor A. Hart; Greg Greenwood; Jay P. Paul; Lance M. Pollack; Diane Binson; Dennis Osmond; Joseph A. Catania

OBJECTIVES We measured the extent to which a set of psychosocial health problems have an additive effect on increasing HIV risk among men who have sex with men (MSM). METHODS We conducted a cross-sectional household probability telephone sample of MSM in Chicago, Los Angeles, New York, and San Francisco. RESULTS Psychosocial health problems are highly intercorrelated among urban MSM. Greater numbers of health problems are significantly and positively associated with high-risk sexual behavior and HIV infection. CONCLUSIONS AIDS prevention among MSM has overwhelmingly focused on sexual risk alone. Other health problems among MSM not only are important in their own right, but also may interact to increase HIV risk. HIV prevention might become more effective by addressing the broader health concerns of MSM while also focusing on sexual risks.


The Lancet | 2012

Comparisons of disparities and risks of HIV infection in black and other men who have sex with men in Canada, UK, and USA: a meta-analysis

Gregorio A. Millett; John L. Peterson; Stephen A. Flores; Trevor A. Hart; William L. Jeffries; Patrick A. Wilson; Sean B. Rourke; Charles M. Heilig; Jonathan Elford; Kevin A. Fenton; Robert S. Remis

BACKGROUND We did a meta-analysis to assess factors associated with disparities in HIV infection in black men who have sex with men (MSM) in Canada, the UK, and the USA. METHODS We searched Embase, Medline, Google Scholar, and online conference proceedings from Jan 1, 1981, to Dec 31, 2011, for racial comparative studies with quantitative outcomes associated with HIV risk or HIV infection. Key words and Medical Subject Headings (US National Library of Medicine) relevant to race were cross-referenced with citations pertinent to homosexuality in Canada, the UK, and the USA. Data were aggregated across studies for every outcome of interest to estimate overall effect sizes, which were converted into summary ORs for 106,148 black MSM relative to 581,577 other MSM. FINDINGS We analysed seven studies from Canada, 13 from the UK, and 174 from the USA. In every country, black MSM were as likely to engage similarly in serodiscordant unprotected sex as other MSM. Black MSM in Canada and the USA were less likely than other MSM to have a history of substance use (odds ratio, OR, 0·53, 95% CI 0·38-0·75, for Canada and 0·67, 0·50-0·92, for the USA). Black MSM in the UK (1·86, 1·58-2·18) and the USA (3·00, 2·06-4·40) were more likely to be HIV positive than were other MSM, but HIV-positive black MSM in each country were less likely (22% in the UK and 60% in the USA) to initiate combination antiretroviral therapy (cART) than other HIV-positive MSM. US HIV-positive black MSM were also less likely to have health insurance, have a high CD4 count, adhere to cART, or be virally suppressed than were other US HIV-positive MSM. Notably, despite a two-fold greater odds of having any structural barrier that increases HIV risk (eg, unemployment, low income, previous incarceration, or less education) compared with other US MSM, US black MSM were more likely to report any preventive behaviour against HIV infection (1·39, 1·23-1·57). For outcomes associated with HIV infection, disparities were greatest for US black MSM versus other MSM for structural barriers, sex partner demographics (eg, age, race), and HIV care outcomes, whereas disparities were least for sexual risk outcomes. INTERPRETATION Similar racial disparities in HIV and sexually transmitted infections and cART initiation are seen in MSM in the UK and the USA. Elimination of disparities in HIV infection in black MSM cannot be accomplished without addressing structural barriers or differences in HIV clinical care access and outcomes. FUNDING None.


PLOS ONE | 2009

Fertility desires and intentions of HIV-positive women of reproductive age in Ontario, Canada: a cross-sectional study.

Mona Loutfy; Trevor A. Hart; Saira Mohammed; DeSheng Su; Sharon Walmsley; Lena Soje; Marvelous Muchenje; Anita Rachlis; Fiona Smaill; Jonathan B. Angel; Janet Raboud; Michael S. Silverman; Wangari Tharao; Kevin Gough; Mark H. Yudin

Background Improvements in life expectancy and quality of life for HIV-positive women coupled with reduced vertical transmission will likely lead numerous HIV-positive women to consider becoming pregnant. In order to clarify the demand, and aid with appropriate health services planning for this population, our study aims to assess the fertility desires and intentions of HIV-positive women of reproductive age living in Ontario, Canada. Methodology/Principal Findings A cross-sectional study with recruitment stratified to match the geographic distribution of HIV-positive women of reproductive age (18–52) living in Ontario was carried out. Women were recruited from 38 sites between October 2007 and April 2009 and invited to complete a 189-item self-administered survey entitled “The HIV Pregnancy Planning Questionnaire” designed to assess fertility desires, intentions and actions. Logistic regression models were fit to calculate unadjusted and adjusted odds ratios of significant predictors of fertility intentions. The median age of the 490 participating HIV-positive women was 38 (IQR, 32–43) and 61%, 52%, 47% and 74% were born outside of Canada, living in Toronto, of African ethnicity and currently on antiretroviral therapy, respectively. Of total respondents, 69% (95% CI, 64%–73%) desired to give birth and 57% (95% CI, 53%–62%) intended to give birth in the future. In the multivariable model, the significant predictors of fertility intentions were: younger age (age<40) (p<0.0001), African ethnicity (p<0.0001), living in Toronto (p = 0.002), and a lower number of lifetime births (p = 0.02). Conclusions/Significance The proportions of HIV-positive women of reproductive age living in Ontario desiring and intending pregnancy were higher than reported in earlier North American studies. Proportions were more similar to those reported from African populations. Healthcare providers and policy makers need to consider increasing services and support for pregnancy planning for HIV-positive women. This may be particularly significant in jurisdictions with high levels of African immigration.


American Journal of Public Health | 2004

Predictors of risky sexual behavior among young African American men who have sex with men.

Trevor A. Hart; John L. Peterson

This study examined the prevalence and correlates of unprotected anal intercourse among 758 young African American men who have sex with men. A quarter of the sample reported unprotected anal intercourse in the past 3 months; nonsupportive peer norms and not carrying condoms predicted risky sexual behavior. Effective interventions are needed that promote the use of condoms by changing peer norms and encouraging carrying condoms.


Archives of Sexual Behavior | 2011

The influence of physical body traits and masculinity on anal sex roles in gay and bisexual men.

David A. Moskowitz; Trevor A. Hart

Sociological, psychological, and public health studies document that many gay and bisexual men may self-label by their anal penetrative role (i.e., bottom or exclusively receptive; top or exclusively insertive; or versatile, both receptive and insertive during anal intercourse). Yet, what orients men to think of themselves as tops, bottoms or versatiles is poorly understood. We surveyed 429 men engaging in same-sex anal intercourse to investigate the degree to which anal penetrative self-identity was concordant with actual penetrative behavior. Additionally, the roles of masculinity and physical body traits (e.g., penis size, muscularity, height, hairiness, and weight) were tested as correlates of anal penetrative identity and identity-behavior concordance. Tops and bottoms showed a high degree of concordance between identity and enacted behavior; however, only half of versatiles reported concordant identity and behavior (i.e., wanting to be versatile and actually reporting versatile behavior). Generally, tops reported larger penises than bottoms. They also reported being comparatively more masculine than bottoms. Versatiles fell somewhat between the tops and bottoms on these traits. Of the six independent variables, penis size and masculinity were the only two factors to influence concordance or discordance between identity and penetrative behavior. Our study suggests that the correlates of gay men’s sexual self-labels may depend on objective traits in addition to the subjective pleasure associated with receptive or insertive anal intercourse.


Archives of Womens Mental Health | 2010

Correlates of HIV stigma in HIV-positive women

Anne C. Wagner; Trevor A. Hart; Saira Mohammed; Elena Ivanova; Joanna Wong; Mona Loutfy

We examined the variables associated with HIV stigma in HIV-positive women currently living in Ontario, Canada. Based on previous literature, we predicted that variables of social marginalization (e.g., ethnicity, income, education), medical variables (e.g., higher CD4 count, lower viral load), and increased psychological distress would be associated with higher perceived HIV stigma among HIV-positive women. One hundred fifty-nine HIV-positive women between the ages of 18 and 52 in Ontario completed self-report measures of the aforementioned variables. Women were recruited through 28 AIDS service organizations, eight HIV clinics, and two community health centers. In multiple regression analyses, for women born in Canada, lower educational level and higher anxiety were associated with higher HIV stigma. For women born outside of Canada, having been judged by a physician in Canada for trying to become pregnant was associated with higher HIV stigma. For HIV-positive women born outside of Canada, negative judgment by a physician regarding intentions to become pregnant should be addressed to reduce perceived HIV stigma and vice versa. Health care providers should be trained in the provision of sensitive and effective health care for women living with HIV, especially when providing reproductive health care.


Hiv Medicine | 2012

High prevalence of unintended pregnancies in HIV-positive women of reproductive age in Ontario, Canada: a retrospective study.

Loutfy; Janet Raboud; J Wong; Mark H. Yudin; Christina Diong; Sandra Blitz; Shari Margolese; Trevor A. Hart; G Ogilvie; K Masinde; We Tharao; G Linklater; K Salam; F Ongoiba; Jb Angel; Fiona Smaill; Anita Rachlis; Ed Ralph; Sharon Walmsley

There is speculation, but there are few data, on the high rates of unintended pregnancies in HIV‐positive women. We investigated rates and correlates of unintended pregnancies among HIV‐positive women of reproductive age.


Archives of Sexual Behavior | 2012

The Relationship Between Intercourse Preference Positions and Personality Traits Among Gay Men in China

Lijun Zheng; Trevor A. Hart; Yong Zheng

Distinctions are commonly made regarding preferences for insertive or receptive anal intercourse within the gay male community. Three sexual self-labels are typically specified: “top,” meaning a man who prefers the insertive position, “bottom,” meaning a man who prefers the receptive position, and “versatile,” meaning a man willing to perform either position. The aim of this study was to examine personality differences among these three groups in gay men in China. We sampled 220 Internet-obtained Chinese gay men on instrumentality, expressiveness, gender-related interests, self-ascribed masculinity- femininity (Self-MF), and Big Five personality traits. Significant differences were found among sexual self-label groups in sexual behavior and in gendered traits and interests. Tops scored higher than the bottoms on instrumentality, gender-related interests, and self-ascribed masculinity-femininity (Self-MF) and bottoms scored higher than tops on expressiveness. Versatiles’ scores in gender-related traits were intermediate between that of tops and bottoms. There were no significant differences in Big Five traits among the three groups. Sexual self-labels appear not only to distinguish sexual behavior patterns but may also suggest gender role differences among Chinese gay men.


Aids Patient Care and Stds | 2011

Mastery and Coping Moderate the Negative Effect of Acute and Chronic Stressors on Mental Health-Related Quality of Life in HIV

Katherine Gibson; Sergio Rueda; Sean B. Rourke; Tsegaye Bekele; Sandra Gardner; Haile Fenta; Trevor A. Hart

Acute and chronic life stressors have a detrimental effect on the health of people living with HIV. Psychosocial resources such as mastery, coping, and social support may play a critical role in moderating the negative effects of stressors on health-related quality of life. A total of 758 participants provided baseline enrolment data on demographics (age, gender, ethnicity, sexual orientation, education, employment, income), clinical variables (CD4 counts, viral load, AIDS-defining condition, time since HIV diagnosis), psychosocial resources (mastery, coping, social support), life stressors (National Population Health Survey [NPHS] Stress Questionnaire), and health-related quality of life (SF-36). We performed hierarchical multivariate regression analyses to evaluate the potential moderating effects of psychosocial resources on the relationship between stressors and health-related quality of life. The top three stressors reported by participants were trying to take on too many things at once (51%), not having enough money to buy the things they needed (51%), and having something happen during childhood that scared them so much that they thought about it years later (42%). Life stressors were significantly and inversely associated with both physical and mental health-related quality of life. Mastery and maladaptive coping had significant moderating effects on mental health but not on physical health. These results suggest that developing interventions that improve mastery and reduce maladaptive coping may minimize the negative impact of life stressors on the mental health of people with HIV. They also highlight that it is important for clinicians to be mindful of the impact of life stressors on the health of patients living with HIV.


Aids Patient Care and Stds | 2008

Social anxiety and HIV transmission risk among HIV-seropositive male patients.

Trevor A. Hart; Carolyn A. James; David W. Purcell; Eugene W. Farber

The role of psychological factors in predicting HIV sexual transmission risk behavior is increasingly of interest in prevention research. Social anxiety, or anxiety about being evaluated in interpersonal situations, is associated with unprotected insertive anal intercourse among young men who have sex with men (MSM) and with other behavioral risk factors for unprotected intercourse, such as depression, smoking, alcohol use, and drug use. Social anxiety may be especially relevant in understanding HIV risk among HIV-seropositive men, given its stronger association with unprotected insertive than with receptive anal intercourse. In the present study, for which participants were recruited between October 2002 and May 2003, HIV-positive men attending regularly scheduled primary care medical appointments at a community HIV clinic were approached by research personnel and informed about the study topic and procedures. Ninety percent of patients approached agreed to participate, resulting in a sample of 206 patients. The sample was primarily African American, unemployed, of low educational level, and 95% of the sample had an AIDS diagnosis. The present study replicated and extended previous research from community samples by demonstrating an association between social anxiety and unprotected insertive anal intercourse with non-HIV-positive partners in a clinical sample of HIV-positive MSM and men who have sex with women (MSW). This association was maintained controlling for depression, smoking, and club drug use. Social anxiety is a relatively robust risk factor for unprotected insertive anal intercourse among MSM. Future work should examine the mechanisms by which social anxiety is associated with sexual risk among MSM.

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